Sewage sludge treatment describes the processes used to manage and dispose of sewage sludge produced during sewage treatment. Sludge treatment is focused on reducing sludge weight and volume to reduce transportation and disposal costs, and on reducing potential health risks of disposal options. Water removal is the primary means of weight and volume reduction, while pathogen destruction is frequently accomplished through heating during thermophilic digestion, composting, or incineration. The choice of a sludge treatment method depends on the volume of sludge generated, and comparison of treatment costs required for available disposal options. Air-drying and composting may be attractive to rural communities, while limited land availability may make aerobic digestion and mechanical dewatering preferable for cities, and economies of scale may encourage energy recovery alternatives in metropolitan areas.
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{"fact":"A cat\u2019s heart beats nearly twice as fast as a human heart, at 110 to 140 beats a minute.","length":88}
{"slip": { "id": 61, "advice": "Once in a while, eat some sweets you used to enjoy when you were younger."}}
{"type":"standard","title":"Jeff Johnson (musician)","displaytitle":"Jeff Johnson (musician)","namespace":{"id":0,"text":""},"wikibase_item":"Q6174177","titles":{"canonical":"Jeff_Johnson_(musician)","normalized":"Jeff Johnson (musician)","display":"Jeff Johnson (musician)"},"pageid":12801464,"thumbnail":{"source":"https://upload.wikimedia.org/wikipedia/commons/thumb/a/ac/JeffJohnson.jpg/330px-JeffJohnson.jpg","width":320,"height":286},"originalimage":{"source":"https://upload.wikimedia.org/wikipedia/commons/a/ac/JeffJohnson.jpg","width":3417,"height":3051},"lang":"en","dir":"ltr","revision":"1283498527","tid":"0551fb14-0f42-11f0-b982-201f857a8618","timestamp":"2025-04-01T21:41:08Z","description":"American recording artist (born 1956)","description_source":"local","content_urls":{"desktop":{"page":"https://en.wikipedia.org/wiki/Jeff_Johnson_(musician)","revisions":"https://en.wikipedia.org/wiki/Jeff_Johnson_(musician)?action=history","edit":"https://en.wikipedia.org/wiki/Jeff_Johnson_(musician)?action=edit","talk":"https://en.wikipedia.org/wiki/Talk:Jeff_Johnson_(musician)"},"mobile":{"page":"https://en.m.wikipedia.org/wiki/Jeff_Johnson_(musician)","revisions":"https://en.m.wikipedia.org/wiki/Special:History/Jeff_Johnson_(musician)","edit":"https://en.m.wikipedia.org/wiki/Jeff_Johnson_(musician)?action=edit","talk":"https://en.m.wikipedia.org/wiki/Talk:Jeff_Johnson_(musician)"}},"extract":"Jeff Johnson is a recording artist, composer, and producer who has released numerous solo and collaborative recordings. Born near Portland, Oregon, he currently resides on Camano Island in the state of Washington.","extract_html":"
Jeff Johnson is a recording artist, composer, and producer who has released numerous solo and collaborative recordings. Born near Portland, Oregon, he currently resides on Camano Island in the state of Washington.
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